Long-distance control and signal device



w. AKEMANN. LONG DISTANCE CONTROL AND SIGNAL DEVICE.

APPLICATION FILED SEPT- 3, I920.

Patented A r. 19, 192 1.

UNITED ESTATES WALTHER AKEMANN, OF ESSEN, GERMANY, ASSIGNOR T0 FRIED.

GESELLSGHAFT, OF ESSEN-ON-THE-BUHR, GERMANY.

Pa rsar caries.)

KRU'PP AKTIEN- LONG-DISTANCE CONTROL AND SIGNAL DEVICE.

Specification of Letters Patent.

Patented Apr, 1-9, 1921.

Application filed September 3, 1920. Serial No. $08,071.

ments of pointers or the like with a syn-' chronously working transmitter and receiver and with a cooperating pointer positively connected with the object which is to be adjusted, and the object of the invention is to provide an apparatus of this kind, the range of adjustment of which is a multiple of the range of adjustment otherwise obtainable and in which it is also possible to ascertain at the/receivin station, whether the difference between t e adjustments of the transmitter and of the object, which is to be adjnsted, according to the indications of the corresponding receiver is very large or not.

The apparatus according to the present in-- vention therefore permits of the time taken for the adjustment operation being materially curtailed b the fact, that the driving member of the o ject to be adjusted is rotated at' an increased speed for such time as the aforesaid difference is great. 2

Theinvention will be described with reference to the accompanying drawings, in which: v

Figure 1 is a diagrammatic illustration of the invention and a Fig. 2 is a fragmentary perspective View of one part ofthe arrangement illustrated in Fi 1.

A s aft A, which drives a transmitter B, has keyed upon it a drum A cooperating with an adjustable mark, which drum is provided with a graduation and can be rotated together with the transm tter B by means of a hand wheelA. The rotation of the transmitter B is transmitted by longdistance conductors C inthe usual way to a receiver D working synchronously with the transmitter. The graduations of the receiver are read by a pointer D rigidly connected to the armature of the receiver D and a mark 6 which is arranged on the periphery of a disk E, which disk can be rotated freely relatively to the ointer D The disk E is positively connecte d by means of a toothed wheel gearing e f f f (as shown in the drawing) with a shaft F provided with a hand Wheel F.

This shaft F is positively connected on the one hand by means of two worm wheel gears f g and f k with the adjustable parts of two auxiliary transmitters G and H and on the other hand by means of a clutch J with a coaxial shaft K, which latter in its turn is connected to the object M, which is to be adjusted, by means of a worm wheel gearing is m. The range of adjustment of the object to be adjusted is equal to the range of adjustment of the drum A. The ratio of transmission of the toothed wheel gearing f f f 6 provided for the driving of the disk E is such that the disk E makes the same number of revolutionsas the transmitter B when the object to be adjusted M is passed over its whole range of adjustment. 7

The ratio of transmission of the worm wheel gearing f k and f g is such, that the entlre range of adjustment of the object to be adjusted M corresponds to a single revolution of the auxiliary transmitter H and a whole cycle of revolutions of the auxiliary transmitter G, which is materially smaller (e. g. than the number of revolutions of the disk E or the transmitter B corresponds to the entire range of ad justment of the object M to be adjusted.

The auxiliary transmitters G and H are connected by conductors G and H with auxiliary receivers N-and P placed at the transmittin station and working synchronously with the corresponding auxiliary transmitters andthe shafts n and p of which each carry a contact arm n p (30- and into the gaps between which contact arms n and 10 may enter with a certain amount of play.

The contact disks Q and R are positively connected to the hand wheel A which drives the transmitter B by means oi"- worm Wheel gears a Q3 and a 7 respectively. The ratio of transmission of the gearing a r is equal to that of the gear 7" 15 that of the gear a g and to that of the gear f 9 so that the entire range of adjustment of the drum A corresponds to a single revolution of the disk It and a number of revolutions of the disk Q, which is equal to the number of revolutions made by the auxiliary transmitter G, when the object M to be adjusted has passed over its entire range of adjustment. The arms a and p form together with the contact pieces 5 g and r r contact devices which are adapted to open or close signaling circuits according to the relative position of the said contact pieces.

The signaling circuits are formed by four conductors s s s and 8 which lead from the contact pieces 9 g andr r to signal lamps T, T T and T respectively and are connected by conductors 8 and s which are attached to the contact arms n and p and to the signal lamps T, T T T with both terminals of an alternating current source S. In the vicinity of the signal lamps T, T T T 8 are arranged in the manner shown in the drawing arrows w, w, 3 and 2, which, when the corresponding lamp lights up, are themselves illuminated and are adapted for indicating the particular direction of rotation of the hand wheel F which is required, in a manner to be hereinai ar descrlbed.

In the description of the working of the above described apparatus we shall start from the position of the various parts shown in the drawing in which the reading ofl? mark cooperating with the drum A is in the zero position and the hand wheel F is in an angular position, which corresponds to the zero position of the ob'ect M to be adjusted. In this position of t e parts the contact arms a and p are situated exactly in the middle of the contact pieces 9' g and. r T which are located on either side ofthem reapectivelyyso that none of the lamps T, '1,

T at the receiving station are lighted up. The pointer D of the receiver is situated opposite the mark'e It now the hand wheel A of the transmitter B be rotated until the adjustable mark points to the desired graduation mark of the graduation of the drum A the re" ceiver D, which works synchronously with the transmitter B and with it the pointer D pass through an equiangular rotation. The rotation of the transmitter 113 is also taken part in by the contact disks Q and R positivel connected therewith and in such a way that the "entire range of adjustment of the drum A corresponds to a considerably smaller number oi? revolutions of the con tact disksand a single revolution of the con tact disk lit. Let it be assure-nth that the rotation of the contact oi' contact disk Q takes place at a considerably greater angular velocity than that of the contact disk R, first bears with its inner face against the contact arm 1%, which was previously at rest and later on the contact piece r bears with its corresponding face against the contact arm 12 in consequence of which the contact arms a? and p and therefore also the auxiliary receivers N and P are carried along by the contact disks Q and R, in the further course of their rotary movement,

The amount of play between the contact arms 71? and p and the aforesaid contact pieces is calculated so that the rotating of the contact arm n by the contact disk Q begins after half a revolution of the transmitter B and the rotating of the contact arm p by the contact disk R after half a revolution of the contact disk Q, if the contact arms were (as stated) previously in their central position shown in the drawing. The rotating of the contact arms a and p as well as of'the auxiliary receivers N and P themselves takes place against the directing force exerted by the auxiliary transmitters G and H on the auxiliar receivers H and P and which tends to hold the receivers N and P and consequently the contact arms n and p in their angular positions corresponding to the angular positions of the correspondin auxiliary transmitters G and H and thereore has to be overcome, when the handwheelyA is rotated. a

The result. of the ,bearing of the contact pieces 9 and r agaihst the contact arms n and p is such that the branch circuits,

which contain the lamps T and T become closed and these lamps and also the arrows to and 3 cor'respondin thereto light u If now the ob'ect to be ad uste is to be adjusted wit reference to the signals shown by the illuminated arrows 'w'and 3/ and position of the pointer D with reference to the mark e to the angular position corresponding to the ad'ustment of the transmitter the handw eel F provided with the adjustment of the object M must first be rotated so-long in the direction of rotation determined by the illuminated arrows w and y until the illuminated arrow'o corresponding to the auxiliary transmitter H oes out.

he rotation of the hand wheel F in the direction of the illuminated arrows w and y is taken Ipart in bythe two auxiliar transmitters and G and also the disk in the same direction, in which the auxiliary receivers P and N rotated by the contact disks lit and Q, and also the receiver D has i,

rotated on the adjustment of the transmitter The auxiliary receivers P and N, which work synchronously with the auxiliary transmitters H and G, do not at first rotate therewith because they have already arrived during the adjustment of the transmitter B in an angular position which is difl'erent from the angu spondin auxiliary transmitters H and G in which t. ey are held against the directing force exerted b the auxiliary transmitters H and G by t e contact pieces 1 and 9 After the corresponding rotation of the hand wheel F the auxiliary transmitter H finally arrives in an angular position which corresponds exactly to the angular position imparted to the auxiliaifi receiver when adjusting the transmitter I If new the hand wheel F? and with it the auxiliary transmitter H be rotated further in the given direction, the auxiliary receiver P begins to take part, under the action of the dlrecting force exerted on it by the auxiliary transmitter H and at the same time rotates the contact arm in such a direction that the said arm 39 again moves away, from the contact piece 1. The circuit in which the lamp T lies, is therefore broken and the arrow corresponding to the auxiliary transmitter H is accordingly no longer illuminated.

As the auxiliary transmitter G takes part in the given rotation of the hand wheel F with a considerably greater angular velocity than the auxiliary transmitter H, it already arrives at the commencement of the rotation of the hand wheel F in an angular position which corresponds exactly to the angular position imparted to the auxiliar'y receiver N when adjusting the transmitter B and in which position the auxiliary receiver N is accordingly able to follow the further rotation of the auxiliary transmitter This continues until the contact arm n", which at the same time moves away from the contact piece 9 and thus causes the lamp to go out, bears against the contact piece 9 so that the lamp T lights up.'

In the further course of the given rotation of the hand wheel F? the aux liary receiver N then again no longer takes part inthe rotation of the auxiliary transmitter G, because it is prevented by the contact piece 9 from rotating inlthe direction of the' arrowy andthen again assumes every time an angular position corresponding to the position of the auxiliary transmitter G when the directing force exerted thereby lies in a direction in which the contact arm n is able to set itself with respect to the contact pieces g g limiting it movement. On the iven rotation of tee hand wheel F, that is to say so lon as the arrow y correspondin to the auxi iary transmitter H 1s illum nated,

lar position of the correthe arrows wand w atthe auxiliary transmitter G therefore alternately light up. As, however, has to be rotated in the direction determined by the auxiliary transmitter H' as long as one of its arrows y and z is illuminated, this fact cannot give any cause for misunderstandings.

By the extinction of illumination of the arrow y, the Fgun layer, who is rotating the hand wheel 1 knows that the adjustment of the object M to he adjusted has aproached tie adjustment of the transmitter to a certain amount, which is smaller than the amount of play between the contact pieces r 1' and the contact arm p Since, this amount of pla on the further rotation of the hand whee F in the previous direction is passed through by the contact arm ;0 durmg the next revolution of the auxiliary transmitter G, the man, who rotates the hand wheel F now turns his attention to the arrows wand :0 corresponding to the auxiliary transmitter G and rotates the hand wheel F in the direction of the arrow w, which promptly lights upwhen the arrow 3 goes out, untilthe signal lamp T which illuminates this arrow also goes out.

As soon as this is the case, the gun layer, who rotates the hand wheel F knows that the adjustment of the object to be adjusted so nearly approached the adjustment of the transmitter that, it agrees accurately therewith, as soon as the mark 6 arrives opposite the pointer DB in the course of the next revolution of the hand wheelll. therefore rotates the hand wheel in the direction of the arrow w, which is still illuminated, until at the latest after one revolution of the disk E or of the hand wheel 15 the mark e will coincide with the pointer D 'As soon as the mark 6 stands opposite the pointer D and none of the arrows are illuminated any longer the object M to be adjusted has attained the exact angular position imparted to the transmitter B.

As follows from the description of the working of the apparatus explained, the gun layer, whorotates the hand-wheel F is in a position to rotate the hand wheel F at an increased speed as long as one of the arrows corresponding to the auxiliary transmitter H lights up, Without having to fear that he is imparting to the object M- to be adjusted, an adjustment which exceeds that rescribed by the transmitter B. This therelore affords the possibility of enabling the objects to be adjusted, to be adjusted very rapidly and nevertheless accurately. At the same time the apparatus which forms part of the present invention permits of the use of a considerably larger number of revolutions of the transmitter B and consequently of a considerable increase in the range of adjustment of the object M to be ad usted,

the hand wheel 1* 1 connected to the object adjusting means,

auztiiiary receivers operativeiy connected to said anniiiary transmitters, contact devices comprising sets of disks and operatic icy said transmitter shaft and anxiiiary receivers respectiveiy signaiing devices, means connecting said signaiing devices to said contact devices, one of said sets oi d s which is connected to said transmi ter sit and one of said anxiiiary 'ceivers e provided with a than the others, said sets of navin 0 1 1 a means thereon for carrying aiong said arms "when the transmitter t is rotated the force exerted icy the -ia2:y

receivers.

'J 2, An apparatus of tee described nicn comprises a transmitter, transmitter hart, a receiver, said transmitter and said ceiver ioeing connected so to operate synchrononsiy, a pointer connected to operatic with said receiver, a cooperating pointer, an object to ca adjusted, for adjusting said object, said means positiveiy connecting said cooperating pointer to said object, two anxiiiary transmitters operativeiy connected to said object, adjusting means, two anaiiiary receivers operativeiy --connected to said anxiiiary transmitters,

two contact devices comprisin two sets of disks and arms operatic icy said transmitter shaft and said auxiliary receivers respectiveiy, one oiv said auxiliary transmitters and one of said sets oi disks being provided with a greater ratio of rotation than the other, signai lamps, means connecting said signal iarops to said contact devices, contact pieces progecting from said disks, said contact pieces adapted to engage the can tact arms so that ti iese contact arms are carried along by the contact disks when the transmitter is rotated against the action of the directing torce exerted icy the anxiiiary receivers 3. An apparatus of time ciass described which comgorises a rotata oie transmitter, a shaft thcreror, a receiver connected for syn cnronons rotation with said transmitter, a

pointer rotataiiie with said receiver, a co-iiperatine porntr, ob ect to ice ad usted,

"ans positi veiy connecting said cooperatreceivers operativeiy connected to said auxiiiary transmitters, one of said auxiiiary receivers provided with a greater ratio of rotation than the other, contact arms in operative connection with said aui iiiary receivers sets oi contact disks operative connection with said transmitter shaft, one said. sets a contact disks having a ratio of re "'ion than the other, an electrical circuit, signai lamps, said signai iarnps being; connected by said circuit to semi contact arms and disirs, spaced contact projecting from said contact disks adjacent arms, said contact pieces being noted engage said arms to carry tiaern a 2 1' e transrni r is ainst action of the directing force one ans. I receivers,

d. apparans oi time class described cin comprises a transmitter, a shaft ros pporting said transmitter, a reior synchronous operation ansinioter, a pointer operaoie W1 "Witil said receiver, a cooperating? pointer, an object to be adjusted, means for adjusting; said object, said means positiveiy connecting said'cooperating mark to said object, tvvoanxiiiary ters connected to and operated by said object-adjusting" means, two a'cxiiiary receivers operativeiy connected to said anxiiiary' transmitters, two contact devices comprising disks and arms, and two pairs of signal iamps, two circuits, each connecting one of said contact devices to one of said "pairs of signai lamps, one part of each of said contact devices being positiveiy connected to said transmitter shaft and the other part of each of said contact devices being positiveiy connected to said auxiliary receivers, one of said two parts of the contact devices whichis connected to said transmitter shaft and one of said two auxiliary receivers being provided with a greater ratio of rotation than the other, said contact disks having means thereon to engage said arms to carry them alone;

against the directing force exerted by the auxiliary receivers.

The foregoing specification signed at Essen, Germany, this 27th day'ot May, T920.

Dr: 'WALTHi-Eit AKEMANN. 

